package com.sky.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.sky.entity.Student;
import org.apache.ibatis.annotations.Mapper;
import java.util.Map;

@Mapper
public interface StudentMapper extends BaseMapper<Student> {
    /**
     * 根据日期范围查询学生数量
     * @param params 包含startDate和endDate的参数Map
     * @return 学生数量
     */
    Long selectCountByDateRange(Map<String, Object> params);
}